TX50e - dhs ELMEA tools
TX50e - dhs ELMEA tools
TX50e - dhs ELMEA tools
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Platform Highlights<br />
▪ High resolution, 3.5” color LCD with intuitive menu structure<br />
▪ Tri-color LED’s for real-time monitoring of circuit status<br />
▪ Compact and robust design optimized for field applications<br />
▪ Durable membrane keypad for reliable operation in all wea-<br />
ther conditions<br />
▪ Dual receiver enabling bi-directional protocol analysis via PC<br />
▪ High capacity rechargeable battery allowing 6 hours continu<br />
ous operation<br />
▪ USB to PC interface for remote control, report generation<br />
and Printing<br />
▪ Voice channel monitoring and access via external headset<br />
and microphone<br />
Transport Expert<br />
2008 Global Test & Measurement<br />
Emerging Company of the Year Award<br />
<strong>TX50e</strong><br />
Handheld 2Mbps Test Set<br />
The <strong>TX50e</strong> is a feature rich hand-held solution for<br />
testing and evaluating 2 Mbps and 64 kbps digital<br />
circuits. A unique combination of signal quality<br />
measurements including ITU-T compliant BER performance<br />
analysis makes the unit a perfect choice for<br />
technicians installing, maintaining or troubleshooting<br />
2 Mbps networks.<br />
Key Features<br />
▪ In-Service and Out of Service measurements<br />
▪ 2 Mbps and N x 64Kbps support<br />
▪ Auto configuration<br />
▪ Frequency and Level measurements<br />
▪ Line rate offset<br />
▪ Round Trip Delay<br />
▪ Error and alarm insertion/measurements<br />
▪ PRBS, fixed and user defined test patterns<br />
▪ Analysis per G.821, G.826 and M.2100<br />
▪ Timeslot contents and activity monitor<br />
▪ Pulse shape analysis per G.703 mask and limits<br />
▪ Oscilloscope function to view 2 Mbps signal<br />
▪ Jitter measurement and generation to ITU 0.171<br />
▪ Maximum Jitter Tolerance (MTJ)<br />
▪ Jitter Transfer Function (JTF) analysis<br />
▪ Voice frequency generation and analysis
User Interface<br />
Intuitive menu structure enables rapid configuration and accessibility<br />
of the instrument. Signal, error and alarm status and conditions<br />
are reported visually using a set of tri-color LEDs. Alarm and error<br />
history conditions can be reset easily using a dedicated front panel<br />
key.<br />
Voice Frequency Testing<br />
Channels can be tested and monitored in-service for level and<br />
quality using different techniques. A built-in PCM codec and an<br />
external headset and microphone connected to the analogue port<br />
provide the capability to insert or listen to voice in user selectable<br />
timeslots. Alternatively, digital tones can be generated internally<br />
and inserted into user selectable N x 64 kbps timeslots enabling<br />
more advanced audio analysis of level and frequency response.<br />
Bit Error Rate Testing<br />
PRBS and fixed test patterns including user programmable bit<br />
sequences (words) are provided. BER measurements can be<br />
performed using either framed or unframed signals, AMI or HDB3<br />
line coding or at 2 Mbps or fractional N x 64 kbps rates. Error and<br />
alarm generation allow the user to stimulate and examine the<br />
responses of the network.<br />
Frame and TS Monitoring<br />
A complete overview of the framing status and timeslot activity<br />
is provided. All bits of the PDH frame are monitored, and their<br />
associated values are displayed in real time in Binary, Hexadecimal,<br />
or ASCII formats. Monitoring includes FAS, MFAS and NFAS words<br />
including Si, Sa and E-bits. Channel Associated Signalling (CAS)<br />
bits of all 30 channels are displayed in real time with idle or busy<br />
indication.<br />
Pulse Shape Analysis<br />
Impedance mismatches and jitter degrade network performance<br />
and problems are often linked to pulse distortion and level. The<br />
Pulse Shape feature helps to identify these physical abnormalities<br />
by capturing, displaying, and verifying the 2 Mbps Pulse according<br />
to limits defined in G.703 recommendations.<br />
Oscilloscope Function<br />
A snapshot of positive and negative pulse train comprising the 2<br />
Mbps signal can be analyzed using the oscilloscope mode. This<br />
measurement capability ensures the signal is properly terminated<br />
and is often used in combination with the Pulse Mask feature to<br />
detect and rectify signal distortion.
Performance Analysis<br />
Performance analysis according to G.821, G.826 and M.2100<br />
recommendations is provided.<br />
Out of-service G.821 analysis can be performed on either 64<br />
kbps sub-rate or 2 Mbps full rate signals using a selection of test<br />
patterns.<br />
In-service G.826 block based measurements evaluate near and far<br />
end parameters simultaneously to establish QOS conditions.<br />
M.2100 test recommendations provide technicians a consistent set<br />
of procedures for bringing into service new networks according to<br />
defined performance objective ratios and thresholds.<br />
Jitter Generation<br />
Maximum Tolerable Jitter (MTJ) and the Jitter Transfer Function<br />
(JTF) test capabilities identifies marginal network equipment.<br />
The Maximum Tolerable Jitter (MTJ) test function implemented on<br />
the Tx50e determines the maximum jitter amplitude that can be<br />
applied to a network element before bit errors are produced on the<br />
output signal. The MTJ test results are presented in both tabular<br />
and graphical formats - the graphical results can be superimposed<br />
and compared to a tolerance mask pre-defined by ITU standards.<br />
Protocol Analysis<br />
Powerful bi-directional protocol analysis is made possible<br />
thanks to innovative product design and popular<br />
post processing techniques.<br />
Configured in passive monitoring mode, dual receivers<br />
proceed to capture and retrieve signaling information<br />
from selected time slots - internal circuits convert this<br />
data into an Ethereal compatible file format. Data<br />
transfer to a PC is achieved using an USB cable and the<br />
unit’s built-in USB interface. Specially developed PC<br />
software preconfigured with timeslot and file storage<br />
settings, records the data for subsequent analysis.<br />
Ethereal, a free open source software supporting a<br />
multitude of signaling protocols including ISDN, GSM,<br />
SS#7 and IP, can now be used to analyze the data.<br />
The Jitter Transfer Function (JTF) on the other hand determines<br />
whether a network element amplifies or reduces jitter. Essentially,<br />
jitter is applied at various frequencies to the input of the network<br />
element or DUT and then compared to the jitter measured at the<br />
output. The logarithmic ratio between input and output is the<br />
Jitter Transfer Function. Similar to the Jitter Tolerance test, a<br />
tolerance mask for the Jitter Transfer Function is also provided.<br />
Jitter Measurement<br />
Jitter is the short term frequency deviation of the digital signal<br />
which can be caused by several factors including regenerators<br />
being affected by noise on the transmission line - multiplexing<br />
of lower rate PDH signals into higher rate PDH signals is another<br />
cause. The Jitter option implemented on the <strong>TX50e</strong> is a simple yet<br />
powerful tool to identify and test various clocking and synchronization<br />
problems occurring in a PDH network.<br />
Jitter measurement according to ITU 0.171 recommendations is<br />
performed on the actual 2 Mbps traffic flow by using proprietary<br />
algorithms. In and out-of-service measurements are available in<br />
monitor or terminated operating modes respectively.
Specifications<br />
Transmitter<br />
Interface<br />
Number of test ports: 1<br />
Interface and Pulse Shape: Conforms to G.703<br />
Bit rate: 2,048 Mbit/s<br />
Impedance: 120Ω balanced or 75Ω unbalanced<br />
Connectors: RJ45 or banana (120Ω) or BNC (75Ω)<br />
Line coding: AMI, HDB3<br />
Max. Output jitter: 0.015 UIpp (Conforms to G.823)<br />
Clock source<br />
Internal: 2,048 Mbps ± 3 ppm<br />
External: 2,048 MHz or 2,048 Mbps<br />
Recovered: From received signal<br />
Offset ± 6 kHz in 1 Hz resolution<br />
Signal Structure<br />
PCM-30, PCM-31, PCM-30C, PCM-31C, Unstructured conforms to<br />
G.704<br />
64 kbps, n x 64 kbps, contiguous or non-contiguous<br />
Test patterns<br />
PRBS: 2n-1 where n = 6, 9, 11, 15, 23<br />
Fixed: All 1, All 0, 1010<br />
User programmable: 24 bit words<br />
Polarity: Normal or inverted<br />
VF Testing<br />
Code law: A-Law<br />
Frequency generation: 1 kHz<br />
Level: -3 dBm0<br />
Headset/microphone interface for talk listen<br />
Alarms and Errors<br />
Generation modes: Single, continuous, user defined<br />
Error rates: 1 x 10-n, where n= 2 to 7<br />
Alarm types: LOS, AIS, LOF, LOM, RDI, RMA, LSS<br />
Error types: Bit, E-bit, FAS, MFAS, CRC, REBE<br />
Receiver<br />
Interface<br />
Number of test ports: 2 (Rx, Sync)<br />
Interface: Conforms to G.703<br />
Bit rate: 2,048 Mbit/s<br />
Impedance: 120ohm balanced or 75ohm unbalanced<br />
Sensitivity: Up to -36 dB in the long-haul mode<br />
Maximum input jitter: Conforms to G.823<br />
Clock signal<br />
Recovered from received data stream<br />
Signal structure and test patterns<br />
Same as transmitter<br />
Measurements<br />
Alarms: LOS, AIS, LOF, LOM, RDI, RMA, LSS<br />
Errors: Bit, code, FAS, MFAS, CRC, REBE<br />
VeEX Inc.<br />
2255, Martin Ave., Suite G,<br />
Santa Clara, CA 95050, USA<br />
Tel: +1.408.970.9090<br />
Fax: +1.408.970.9099<br />
www.veexinc.com<br />
customers@veexinc.com<br />
Performance Analysis<br />
G.821: test pattern ES, SES, US, %ES, %SES, %US<br />
G.826: ES, SES, BBE, US, %ES, %SES, %US.<br />
M.2100: 2,048 Mbit/s with CRC, ES, SES, BBE, US,<br />
%ES, %SES, %US.<br />
Pulse shape Analysis<br />
Rise time, fall time, pulse width, level measurement<br />
Oscilloscope function (SW option)<br />
Frequency passband: 0.01 to 10 MHz<br />
Attenuation: 0dB, 6 dB, 12dB<br />
Jitter measurement (SW option)<br />
Measurement: Conforms to ITU O.171<br />
Range: 0.05 to 10 UIpp<br />
Accuracy: 0.02±5% UIpp<br />
General Specifications<br />
Size 155 x 85 x 40 mm (H x W x D)<br />
(6.1 x 3.34 x 1.57 in)<br />
Weight Less than 0.5 kg (less than 1.1 lbs)<br />
Battery NiMH with 6 hours autonomy<br />
AC Adapter 100 to 240 AC, 50/60Hz<br />
Display 320x240 pixels, backlight color LCD<br />
LED SIG, AIS, FRM, MFR, RDI, SES, RMA, PAT<br />
Remote Control USB slave mode<br />
Ordering Information<br />
Z04-99-001G E1 Handheld Tester with Pulse Mask Analysis,<br />
RJ45 Interface<br />
Z04-99-002G E1 Handheld Tester with Pulse Mask Analysis,<br />
BNC Interface<br />
Interfaces/Test Options<br />
Z88-00-002G Jitter Generation/Measurement<br />
Z88-00-003G PC Software for Protocol Capture via USB<br />
Recommended Accessories<br />
F02-00-004G USB Cable<br />
F02-00-008G RJ48 to BNC Test Cable, 2 m<br />
F02-00-009G RJ48 to 3-Pin Banana Test Cable, 2 m<br />
F02-00-010G BNC to BNC Test Cable, 2 m<br />
Replacement Items<br />
A03-00-003G AC Adaptor, US Plug<br />
A03-00-004G AC Adaptor, EU Plug<br />
A03-00-005G AC Adaptor, UK Plug<br />
C01-00-001G Carrying Case (Basic)<br />
© 2007-2008 VeEX Inc. All rights reserved.<br />
VeEX is a registered trademark of VeEX Inc. The information contained<br />
in this document is accurate. However, we reserve the right to change<br />
any contents at any time without notice. We accept no responsibility for<br />
any errors or omissions. In case of discrepancy, the web version takes<br />
precedence over any printed literature.<br />
D05-00-011P B00 2008/05